Even with no line-of-sight (LoS), stations can optically communicate using Indirect line-of-sight diffused-light free-space optical communications (ID-FSOC). A diffuse reflector in the LoS of the stations reflects diffused light to them. But despite having diffused reflections in almost all directions, the orientation of a flat diffuse reflector defines the communications coverage. Therefore, there is a need for a tool that describes the relationship between the orientation of the diffuse reflector, the coverage, and the achievable data rates for the effective deployment of ID-FSOC. In this paper, we propose a model of the coverage of a diffuse reflector that can allow us to estimate the achievable data rates as a product of the orientation of the diffuse reflector. We use ground-to-vehicle communications as a demanding example scenario. We also propose RISE, a heuristic algorithm that optimizes the horizontal and vertical tilt angles of the reflector to maximize the achievable data rates. We show that 50% or more of the transmitted power of light is reflected, thereby achieving 1 Gbps or higher data rates across the optical local area network.

即使没有视距 (LoS)，站点也可以使用间接视距漫射自由空间光通信 (ID-FSOC) 进行光通信。站点视域中的漫反射器将漫反射光反射到它们。但是，尽管在几乎所有方向都有漫反射，平面漫反射器的方向定义了通信覆盖范围。因此，需要一种工具来描述漫反射器的方向、覆盖范围和可实现的数据速率之间的关系，以有效部署 ID-FSOC。在本文中，我们提出了一个漫反射器覆盖范围的模型，它可以让我们将可实现的数据速率估计为漫反射器方向的乘积。我们使用地对车通信作为要求苛刻的示例场景。我们还提出了 RISE，这是一种启发式算法，可优化反射器的水平和垂直倾斜角，以最大限度地提高可实现的数据速率。我们展示了 50% 或更多的光传输功率被反射，从而在整个光局域网上实现 1 Gbps 或更高的数据速率。